Color

#56f559

#56f559
hex#56f559
rgbrgb(86, 245, 89)
hslhsl(121, 89%, 65%)
oklchoklch(0.856 0.238 143.4)
Closest name: Cathode Green (#00ff55)Relative luminance 0.68

Colors that go with #56f559

Violet, Deep Sky Blue and Hot Pink lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#f556f3

#a3f556 · #56f5a8

#5956f5 · #f55956

Split-complementary

Open in tool →

#a856f5 · #f556a3

#56a3f5 · #f556f3 · #f5a856

Contrast

#56f559 as textRatioAAAA largeAAAFix
Aaon white
1.44:1failfailfail
  • AA: use #08870a as the text (4.69:1)
  • AAA: use #066507 as the text (7.31:1)
  • AA: or shift the background to #5e5e5e (4.51:1)
  • AAA: or shift the background to #404040 (7.21:1)
Aaon black
14.6:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #56f559 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #56f559
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #56f559 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/56f559-a2bea6-9b4edf-1f2d26-edf1e9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md